# NoteLED

LED responds to incoming Note On/Off messages.

> Original: `1.Note-LED.ino`

```cpp pico
#include "pico/stdlib.h"
#include "pico/cyw43_arch.h"
#include <cs_midi.h>

using namespace cs;

BluetoothMIDI_Interface midi;

NoteLED led {
    13,                            // LED pin
    {MIDI_Notes::C[4], Channel_1},
};

int main() {
    stdio_init_all();
    if (cyw43_arch_init()) return 1;
    Control_Surface.begin();
    while (true) {
        Control_Surface.loop();
        sleep_ms(1);
    }
}
```